Www Videos Gratis.com/mx How Safe And Effective Is It To Download Videos On YouTube Through This Website, Www.kissyoutube.com?

How safe and effective is it to download videos on YouTube through this website, www.kissyoutube.com? - www videos gratis.com/mx

I searched the 'net to download videos on YouTube, and I have this instructional video on YouTube, you can do so by www.kissyoutube.com. Is it safe to do so ... That means no viruses and spyware and is free indeed ... how to pay for anything? After the download, then I burn a CD, VCD, DVD format?